One must attend Disney University.
Yup. There is really a place called Disney University. Enrollment is a matter of employment. In other words, every cast member goes to University. There, they cover more than just the Look Book. They teach students every detail of how one appears, behaves, and engages the people in the park. It’s strict. For example, princesses cannot stand taller than five-foot-eight, no shorter than five-four. Hopefully, they sort that out before hiring. Be tough to do anything about it afterwards.